Re: vrrp Digest, Vol 25, Issue 5

As per RFC, this is an expected behavior. During the time when RA is in BACKUP state (after no shut), the pre-emption enable/disable status does not impact the state since the priority of the received advertisement packet from RB is same as RA's VR's priority. (The value of pre-emption has meaning in RA only if the priority in the received packet is less than RA's VR's priority)

And this is also practically a correct behavior. We do not expect a flipping in the existing router state by adding a new VR with same priority.


On Thu, 14 Sep 2006 [email protected] wrote :
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>    1. Routers having same priority with pre-empt enabled (Manjula j)
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>----------------------------------------------------------------------
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>Message: 1
>Date: Thu, 14 Sep 2006 10:26:12 +0100 (BST)
> From: Manjula j <[email protected]>
>Subject: [VRRP] Routers having same priority with pre-empt enabled
>To: [email protected]
>Message-ID: <[email protected]>
>Content-Type: text/plain; charset="iso-8859-1"
>
>Hi,
>
>   Can anyone please tell me what is the behavior of below scenario:
>
>   Electing MASTER & BACKUP router when having SAME PRIORITY
>
>   1--- > Router(RA) is master(with ip 1.1.1.2) & Router(RB) is BACKUP(with ip 1.1.1.1)
>
>   2 --- > Both the routers are having same priority say 100.
>
>   3 ---  > Now shut the master that is RA.
>
>   4 ---  > RB becomes the MASTER
>
>   5 ---   > Now no shut the MASTER. RA remains as BACKUP router since the priority is same.
>
>
>   Is this is the expected behavior? Please explain.
>
>   Regards,
>   Manjula
>
>
>
>
>
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